turn pandas entries into strings

frame["DataFrame Column"]= frame["DataFrame Column"].map(str)
frame["DataFrame Column"]= frame["DataFrame Column"].apply(str)
frame["DataFrame Column"]= frame["DataFrame Column"].astype(str)
frame["DataFrame Column"]= frame["DataFrame Column"].values.astype(str)

Here is what the above code is Doing:
1. map: It is used to map values of series according to input correspondence.
2. apply: It applies a function along an axis of the DataFrame.
3. astype: It is used to cast a pandas object to a specified dtype.
4. values: It returns an ndarray containing the values.
5. astype: It casts the values to a specified dtype.